A pickup popped out of gear while parked on Alabama Street as its owner was loading a car onto an attached trailer.
The man attempted to jump into his black truck to stop it from rolling when he fell on the ground and underneath the truck's rolling wheels.
He had been directing his wife, who was driving an older model silver Mercedes Benz that they had purchased from a Los Alamos woman living on Alabama Street.
The couple's son was sitting in the parked truck when the accident occured.
"It was just one of those unfortunate accidents," said Sgt. Jeff Regenold, who responded to the scene with Cpl. Alfred Roybal and Ofc. Daniel Roberts.